1948 04 - daily  - mean of NCEP mean Daily Clear Sky Downward Longwave Flux at surface, W/m^2.
BasinID	Name	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
0	Pan Arctic	178.0	176.1	177.6	178.3	176.9	178.2	180.2	181.6	182.9	185.4	183.5	178.4	175.9	178.2	180.4	180.5	183.7	186.8	188.0	186.1	188.9	196.0	201.7	204.0	203.6	204.3	204.6	206.1	210.4	213.5	-9999.0
34	Hudson Bay	189.7	183.0	189.4	201.5	193.0	182.2	181.5	180.0	178.5	187.9	195.6	184.5	183.9	189.4	192.1	183.6	206.5	222.7	211.6	201.2	206.2	227.3	240.1	255.1	259.9	257.5	238.0	228.3	236.7	238.3	-9999.0
36	Hudson Strait	175.1	193.9	187.6	166.2	156.4	175.5	151.1	143.8	146.8	150.8	157.7	187.4	190.3	174.1	193.4	164.6	159.4	161.0	195.1	173.7	157.9	158.4	156.8	168.4	181.6	197.9	194.7	206.7	216.1	208.1	-9999.0
98	Bering Strait	162.5	184.7	190.8	193.5	194.7	195.4	197.6	202.6	202.5	199.0	196.5	194.1	205.4	190.6	173.0	161.4	157.0	158.2	165.9	168.5	173.8	165.4	164.8	171.1	185.2	199.9	205.8	200.8	206.4	206.1	-9999.0
128	Arctic subocean	115.3	108.2	105.1	110.9	110.8	111.7	112.4	102.0	102.3	105.1	112.7	117.8	123.2	121.7	118.8	120.7	125.7	137.7	134.8	122.3	124.5	127.2	147.1	157.1	145.0	141.6	156.7	165.5	153.6	153.0	-9999.0
130	Chukchi Sea	192.4	202.4	203.6	199.6	192.8	195.0	205.5	203.1	209.8	185.1	196.1	206.1	211.7	178.7	148.2	154.9	166.8	185.8	191.6	173.0	145.7	142.9	157.7	187.9	207.2	211.9	192.5	185.4	193.9	186.6	-9999.0
132	Beaufort Sea	153.9	153.9	159.7	158.2	156.3	163.2	169.5	177.6	180.6	181.0	157.6	147.6	151.1	170.0	174.7	188.4	178.4	164.7	169.1	175.2	193.5	211.2	214.7	197.7	194.7	186.7	198.1	208.0	220.5	229.7	-9999.0
134	Arctic Archipelago	125.8	125.2	127.6	127.0	123.0	130.3	142.1	144.3	141.3	137.3	134.5	135.1	136.2	138.7	141.4	151.4	155.6	149.3	142.0	136.8	148.6	163.9	189.5	184.9	173.0	183.8	181.8	193.2	199.6	211.8	-9999.0
136	Foxe Basin	144.6	141.6	143.5	133.6	129.8	130.5	127.3	129.1	143.8	151.4	154.0	148.5	140.2	150.4	159.3	158.9	149.1	150.5	159.1	156.1	142.3	138.3	149.5	170.6	196.4	219.4	233.5	220.2	205.1	199.6	-9999.0
138	Baffin Bay	103.8	98.2	100.3	99.3	108.2	110.4	97.8	92.1	95.8	103.4	113.1	103.7	94.0	96.3	98.6	109.3	127.3	141.0	130.8	117.5	116.4	138.5	157.8	167.5	152.3	137.1	166.2	162.9	153.1	142.4	-9999.0
139	South Greenland	146.2	134.5	129.4	133.1	141.3	140.4	139.1	135.5	140.0	144.9	138.2	130.4	130.9	132.7	130.6	135.6	140.9	155.3	174.2	163.0	166.4	173.5	174.2	181.9	163.6	160.9	172.2	180.9	165.3	159.5	-9999.0
140	Greenland Sea	142.5	125.7	114.8	105.8	103.3	108.2	102.1	96.5	92.2	105.8	118.6	118.7	115.0	117.7	123.2	121.5	115.7	113.9	141.4	135.8	128.9	142.6	163.6	185.0	175.6	137.3	136.2	149.5	147.0	131.5	-9999.0
142	Norwegian Sea	238.5	236.4	233.9	230.7	229.0	228.3	222.2	224.4	227.3	223.3	217.9	229.0	226.7	214.8	223.2	237.9	245.8	243.5	231.2	213.6	235.8	240.5	229.5	234.7	241.6	231.7	217.8	208.1	211.2	214.7	-9999.0
144	Barents Sea	208.1	223.9	235.7	233.0	231.1	225.9	230.1	235.9	229.6	242.6	233.9	203.8	186.5	198.2	213.3	213.8	213.3	207.9	205.0	200.7	191.5	196.8	197.9	187.9	188.1	197.5	210.0	221.9	221.3	218.2	-9999.0
146	Kara Sea	201.9	191.9	194.0	197.4	200.6	204.2	205.2	206.5	209.9	209.9	211.5	209.0	197.7	191.0	191.8	195.4	200.0	204.9	209.7	212.6	215.5	219.3	219.7	223.5	228.5	227.7	218.4	215.2	222.2	231.0	-9999.0
148	Laptev Sea	191.7	187.7	177.0	166.8	161.3	167.0	175.0	176.5	179.2	180.5	171.3	168.4	179.4	192.4	190.7	185.7	189.8	192.2	187.8	188.2	182.4	182.7	191.2	183.7	173.0	180.3	192.0	199.0	199.4	199.8	-9999.0
150	East Siberian Sea	152.2	164.0	176.3	182.1	177.8	168.2	170.6	178.1	177.3	177.9	176.9	175.9	161.1	169.3	200.3	208.0	187.4	180.3	173.0	173.7	188.6	194.3	193.5	195.4	191.2	179.4	187.2	199.3	213.9	222.4	-9999.0
152	Gulf of Alaska	160.3	186.1	192.4	196.1	193.0	197.9	205.0	208.9	207.9	212.0	212.8	202.7	210.3	207.9	198.5	172.2	161.3	156.8	162.9	172.7	180.6	181.8	168.3	166.7	173.6	200.9	217.7	205.8	205.3	208.6	-9999.0
154	Southeast Bering Sea	192.6	206.1	202.6	202.1	207.2	229.7	226.4	214.9	215.5	219.3	232.8	239.1	231.6	220.7	195.2	165.0	154.2	161.0	176.7	185.5	191.8	164.8	157.5	180.1	205.9	238.1	229.5	209.5	204.3	210.3	-9999.0